Reflex reflectors can generally be divided into two categories: non-conditioned reflex and conditioned reflex. According to the nature of the system to divide the signal, signal conditioning system can be divided into first and second signal system reflection reflection.
unconditioned reflex is the human beings are born with congenital reflex. Is a relatively low level of neural activity from the cerebral cortex following nerve center (such as the brain stem, spinal cord) to participate to complete. Knee-jerk reflex, blink reflex, scaling back reflection, the baby's sucking, so non-conditioned reflex micturition reflex. Plum is a very sour fruit, to eat up the people mouth water. This reflex activity is an inherent, but can not learn, and therefore a non-conditioned reflex.
conditioned reflex is born later in life, after the process of evolving nature of reflection, is based on the non-conditioned reflex, after a certain process, the participation in the completion of the cerebral cortex is a high neural activity, is a basic form of higher nervous activity. Many people eat plum, plum when he saw the time, will be drooling. This is what he had eaten the plums on the basis of drooling can be done, so is the conditioned reflex. Imagine if I had not eaten Cao Cao's soldiers are plum, and no one told them plums are sour, it would be what kind of outcome.
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conditions caused by the reflected signal according to the type of signal conditioning systems can be divided into first and second signal system reflection reflection. From a variety of visual, auditory, tactile, olfactory, taste caused by the specific signal, the first signal system called reflection. Is shared by humans and animals.
human struggle with nature in the process, the group had a language, more and more developed brain, the formation of a language center in the cerebral cortex, so humans can form the abstract language of conditioned reflex This is unique to human beings, belong to the second reflection signal system, such as talking about plum thirst.
Conditioned reflex
